Increase in sidepod height (1989 to 1996)

Anyone explain to me why sidepods became so much taller between 89 and 96.

The only reason I could possibly think of would be a need for increased cooling. However, there would have only been a marginal increase the heat being developed by the engines over the period due to increased revs. The sidepods by 1995 and 1996 were enourmous compared to those at the very beginning of the decade.

Firstly, the regulations changed to limit car overall width and it may be that narrowing the pod width to match the narrower tyre width was the best thing for aero. That would require the pods to get higher to keep up the total radiator area.

Secondly ,The growing use of CFD may have let the designers ( or aero men anyway) to be more adventuruos with sidepod shape. Historically anything with a curve or camber down on the car upper body was viewed with suspicion as it could induce lift . With CFD it is possible to model or visualize much more complex shapes so higher pod heights and downward sloping bodywork to get space under the wing , as in today's cars, is more feasible.

Something similar happened between the F-117 stealth fighter and the B-2 stealth bomber. The strange multi angled facets on the F-117 were not what the designers wanted for aero performance , it was just that ( apparently) the computer modelling of the day coudn't resolve too many angles for optimum stealth so flat surfaces were used. By the time the B-2 came along they had improved the modelling so it is much smoother shape ( i.e many, many facets) to help the aero performance.

Firstly, the regulations changed to limit car overall width and it may be that narrowing the pod width to match the narrower tyre width was the best thing for aero. That would require the pods to get higher to keep up the total radiator area.

Didn't realise this happened. The only time I remember something similar was for 1998 when the width of the car from wheel to wheel was narrowed.

Air flow behind the front wheel has bad current, and it disturbs flow towards the rear wings?

As engine revved higher and huger, operating temp of engine raised as engine start to run hot, thus more air to radiator? Till Ferrari exploiting new metal block where engine could run hotter, was 2004?

Getting to know more about how to sort air flow around the rear wheel, by placing higher side pods it reduced the bad current and sorted out better?

Found Down wash behind the side pods actually created more down force on top side of the rear end body shell??